1. Limited product diversification - Alcoa Corporation primarily focuses on aluminum production, which can be a disadvantage compared to peers that have a more diversified product portfolio. This lack of diversification may make the company more vulnerable to fluctuations in aluminum prices and demand.

2. Exposure to cyclical industries - As a company heavily involved in the aluminum industry, Alcoa Corporation is exposed to the cyclical nature of the industry. During economic downturns or periods of low demand, the company may face challenges in maintaining profitability.

3. Environmental concerns - Aluminum production can have significant environmental impacts, including high energy consumption and greenhouse gas emissions. Alcoa Corporation may face criticism and regulatory challenges related to its environmental practices, which can affect its reputation and operations.

4. High capital requirements - The aluminum industry requires substantial capital investments in infrastructure, equipment, and technology. Alcoa Corporation may face challenges in accessing sufficient capital to fund its operations and remain competitive compared to peers with stronger financial positions.

5. Global competition - Alcoa Corporation operates in a highly competitive global market, facing competition from both domestic and international peers. This intense competition can put pressure on the company's market share, pricing power, and profitability.

6. Labor and union issues - Like many companies in the manufacturing sector, Alcoa Corporation may face labor and union-related challenges. These issues can include labor disputes, strikes, and higher labor costs, which can impact the company's operations and financial performance compared to peers with more stable labor relations.